said by pross :
Are people who are having this problem using a router or a direct connection to cable modem?
I was having this issue then jumped into my router and did a Renew on the router instead of my PC and voila everything started working again.
Could be a coincidence, but just a suggestion to try.
Tried that and didn't fix anything. It's free for me so I am sure that is the type of response I will see. I am just glad I don't pay for their service.